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Astronauts Recognize Most Potential Stars In Hunt For Life

The new TESS (Transiting Exoplanet Survey Satellite) by NASA is developed to hunt habitable exoplanets, but with thousands of smaller and sun-akin stars in its camera views, which of those stars can host planets similar to Earth? TESS will look into 400,000 stars all over the whole sky to get a glance of a planet shipping all over the surface of its star, one of the major techniques by which exoplanets are verified.

A group of astronauts from Lehigh University, Cornell University, and Vanderbilt University has verified the most potential targets for this study in the new “TESS Habitable Zone Star Catalog,” posted in Astrophysical Journal Letters. Lead writer is (professor at Cornell for astronomy, a member of the TESS science group, and director of Carl Sagan Institute at Cornell) Lisa Kaltenegger.

The catalog recognizes 1,822 stars for which TESS is sufficiently sensitive to detect Earth-akin planets just a little bigger as compared to Earth that get radiation from their equivalent star to what Earth gets from our Sun. For almost 500 stars, TESS can glance a planet just as tiny as Earth, with same irradiation, in a single transit alone.

On a related note, some 95% of stars towards the end of their lives develop into red behemoths that lose their weight through a “stellar wind.” Scientists form 14 European scientific organizations, amongst them the IAC, have found the presence of a binary interaction that had not been seen by the scientific society.

This new study provides an optional clarification to the high rates of weight loss that it was believed were present towards most massive giant stars’ end of the lives. The research, which is posted in the Nature Astronomy journal, displays that these stars lose weight at a much slower pace as compared to what was earlier thought.

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